int buzzer = 5;
void setup()
{
  pinMode(buzzer, OUTPUT);
}
void loop()
{
  unsigned char i, j;
  while (1)
  {
    for (i = 0; i < 200; i++)
    {
      digitalWrite(buzzer, HIGH);
      delay(1);
      digitalWrite(buzzer, LOW);
      delay(1);
    }
    for (i = 0; i < 100; i++)
    {
      digitalWrite(buzzer, HIGH);
      delay(2);
      digitalWrite(buzzer, LOW);
      delay(2);
    }
  }
}
